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Effect of high hydrostatic pressure pretreatment on physicochemical properties, bioactive components and antioxidant activities of dehydrated yam slices

文献类型： 外文期刊

作者： Peng, Jian 1 ; Lu, Jinghui 1 ; Zhu, Jingnan 1 ; Li, Dingjin 2 ; Li, Lu 1 ; Yu, Yuanshan 1 ; Xu, Yujuan 1 ; Wu, Jijun 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Minist Agr & Rural Affairs, 133 Yiheng St,Dongguanzhuang Rd, Guangzhou 510610, Peoples R China

2.Hezhou Univ, Guangxi Key Lab Hlth Care Food Sci & Technol, 3261 Xiaohe Rd, Hezhou 542899, Peoples R China

关键词： High hydrostatic pressure; Dried yam slice; Quality characteristics; Starch granule; Antioxidant capacity

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.0； 五年影响因子：6.0 ）

ISSN： 0023-6438

年卷期： 2024 年 198 卷

页码：

收录情况： SCI

摘要： High hydrostatic pressure (HHP) treatment has been widely used to achieve the desired safety and quality of food products during the past two decades. In this work, effects of HHP (100-600 MPa) pretreatments on physicochemical properties, bioactive components and antioxidant activities of dehydrated yam slices were studied. The results indicated that HHP pretreatments dramatically improved the hardness, crispness, integrity ratio, and total color change of the dehydrated yam slices, while significantly inhibited their rehydration ratio when the pressure was >= 200 MPa. According to the results of scanning electron microscopy (SEM), optical microscopy (OM), and polarized optical microscopy (POM), HHP could induce the indentations and cracks of partly starch granules surface, but without any starch gelatinization. Compared with the control sample, higher total polyphenols compounds (TPC) and allantoin content were observed in the HHP pretreated samples, and the 200 MPa pretreated sample had the highest TPC and allantoin which reached 0.45 mg GAE/g and 5.47 mg/g dry weight, respectively. Furthermore, the antioxidant analysis showed that 100 and 200 MPa pretreatment could effectively enhance the antioxidant capacity of the yam slices. The above results suggested that HHP pretreatment, especially under 200 MPa, could be an appropriate assist for preparation of high-quality dehydrated yam slices.

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